Ghost faults are intermittent problems: a machine behaves oddly or stops working, then—without any obvious fix—returns to normal. Because the fault is brief and inconsistent, it’s hard to reproduce and diagnose. At a high level, ghost faults stem from two buckets: External factors (environment, power quality, interference) Internal factors (aging components, loose connections, micro‑cracks) External factors (often the fastest wins) Power quality & interference (EMI/RFI): Volt
